diff --git a/usr.sbin/nfsd/nfsd.c b/usr.sbin/nfsd/nfsd.c index c6a14ae6b894..2414ba8d7b85 100644 --- a/usr.sbin/nfsd/nfsd.c +++ b/usr.sbin/nfsd/nfsd.c @@ -1179,14 +1179,16 @@ backup_stable(__unused int signo) static void parse_dsserver(const char *optionarg, struct nfsd_nfsd_args *nfsdargp) { - char *ad, *cp, *cp2, *dsaddr, *dshost, *dspath, *dsvol, nfsprt[9]; - char *mdspath, *mdsp; + char *cp, *cp2, *dsaddr, *dshost, *dspath, *dsvol, nfsprt[9]; + char *mdspath, *mdsp, ip6[INET6_ADDRSTRLEN]; + const char *ad; int ecode; u_int adsiz, dsaddrcnt, dshostcnt, dspathcnt, hostsiz, pathsiz; u_int mdspathcnt; size_t dsaddrsiz, dshostsiz, dspathsiz, nfsprtsiz, mdspathsiz; - struct addrinfo hints, *ai_tcp; + struct addrinfo hints, *ai_tcp, *res; struct sockaddr_in sin; + struct sockaddr_in6 sin6; cp = strdup(optionarg); if (cp == NULL) @@ -1275,22 +1277,55 @@ parse_dsserver(const char *optionarg, struct nfsd_nfsd_args *nfsdargp) /* Get the fully qualified domain name and IP address. */ memset(&hints, 0, sizeof(hints)); - hints.ai_flags = AI_CANONNAME; - hints.ai_family = AF_INET; + hints.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; + hints.ai_family = PF_UNSPEC; hints.ai_socktype = SOCK_STREAM; hints.ai_protocol = IPPROTO_TCP; ecode = getaddrinfo(cp, NULL, &hints, &ai_tcp); if (ecode != 0) err(1, "getaddrinfo pnfs: %s %s", cp, gai_strerror(ecode)); - if (ai_tcp->ai_addr->sa_family != AF_INET || - ai_tcp->ai_addrlen < sizeof(sin)) - err(1, "getaddrinfo() returned non-INET address"); - /* Mips cares about sockaddr_in alignment, so copy the addr. */ - memcpy(&sin, ai_tcp->ai_addr, sizeof(sin)); + ad = NULL; + for (res = ai_tcp; res != NULL; res = res->ai_next) { + if (res->ai_addr->sa_family == AF_INET) { + if (res->ai_addrlen < sizeof(sin)) + err(1, "getaddrinfo() returned " + "undersized IPv4 address"); + /* + * Mips cares about sockaddr_in alignment, + * so copy the address. + */ + memcpy(&sin, res->ai_addr, sizeof(sin)); + ad = inet_ntoa(sin.sin_addr); + break; + } else if (res->ai_family == AF_INET6) { + if (res->ai_addrlen < sizeof(sin6)) + err(1, "getaddrinfo() returned " + "undersized IPv6 address"); + /* + * Mips cares about sockaddr_in6 alignment, + * so copy the address. + */ + memcpy(&sin6, res->ai_addr, sizeof(sin6)); + ad = inet_ntop(AF_INET6, &sin6.sin6_addr, ip6, + sizeof(ip6)); + + /* + * XXX + * Since a link local address will only + * work if the client and DS are in the + * same scope zone, only use it if it is + * the only address. + */ + if (ad != NULL && + !IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) + break; + } + } + if (ad == NULL) + err(1, "No IP address for %s", cp); /* Append this address to dsaddr. */ - ad = inet_ntoa(sin.sin_addr); adsiz = strlen(ad); if (dsaddrcnt + adsiz + nfsprtsiz + 1 > dsaddrsiz) { dsaddrsiz *= 2;